Extension table



Nov. 28, 1933. w. P. SENG El AL EXTENS ION TABLE 2 Sheets-Sheet 2 Filed Jan. 12, 1932 Y Z. Y n w I, e m m\ Q SH i P F Patented Nov. 28, 1933 PATENT OFFICE EXTENSION TABLE Wendelin P. Seng and George F. Hassel, Chicago, 'fil.,assignors to The Seng Company, Chicago,

Application Jannary1 2, 1932. 7 Serial No. 586,197

11 Claims. (01. 45-112 Our invention is an improvement in extension tablesof that t'ypein which the top is divided 7 into two parts or sections attached to members of cooperating slides sothat theymay be separated to receive between them an extra leaf housed at the center of the table belowsaid top sections, with means actuated by the supporting slidesof the topsections on movement thereof for raising the leaf into position in extending the table and for lowering or housing said leaf in contracting the table by closing the sections of the t p t h r- We have in view as the main object of our invention the provision of a set of metal fixtures for tables of this general characte'fthatwill impart the required up and down movements to the leaf on sliding the top sections in extending and closing the tableas well as provide that in extending the table the leaf will be properly retairied in position coplanar with the top sections 'soasto be engaged by the dowels to form a close joint when the surface of the top is increased by the interposed section or leaf, and in the presem instance the particular construction of the metal fixtures insures'a positive operation that will respond to the manipulation of either one of the top sections." a

These important objects and advantages are attained by a metal fixture or fixtures attached. to the under side of the leaf for engagement therewith of a pin projecting from the slide of either longitudinally movable top section so as to effect vertical movement of said leaf, in cooperation with a pair of metalfixtures attached to the leaf and center rail respectively for retaining the leaf .or extra top section in proper position when it is raised or lifted to be received between the main top sections closed thereagainst; all as hereinafter fully described and more specifically -set forth in theappended claims.

' In the accompanying drawings which form a par thereof: I

' I Figure l is a plan view of an extension table equipment in accordance with our invention, the

. sections of the top being indicated in' dotted lines.

Fig. 2 is a longitudinal sectional'view through the table at one side of the supporting frame, on the line 2-2 of Fig.1.

. 5O Fig. 3 is a similar view on the line 33 of Fig.

" 1, looking from the other side of the table.

Fig. 4 is a detail perspective View of the metal fixture for raising and lowering'the leaf. i Fig. 5 is a longitudinal sectional view similar to Fig. 2, with the slidable sections of the topclosed.

' Fig. 6 'is a sectional view on the line 66 of l to show the metal fixtures for supporting f the leaf in raised position.

to designate like parts ofthe two sets.

the table extended or with the leaf between the r top'sections.

Figs. 8 and 9 are detail views of the companion fixtures for supporting the .table leaf in elevated position. 5

Fig.-10 is an edge view of said fixtures in operative position. v v Fig. 11 is a detail sectional view of the metal slide and operating member carried thereby, and

- Fig. 12 'is a longitudinal sectional view illus- 7 trating a .modification of the leaf supporting means. 7

' Our improved form of metal fixtures for exten sion tables for raising and lowering theleafand for retaining the same in elevated position in the closing of the horizontally movable top sections 1 against said leaf may be-applied-to various types of supporting frames for the top, that shown being for a pedestal table, and comprises spaced apart longitudinal beams 15, 15 connected togetherat' their ends by crosspieces l6 attachedzs to the under side thereof, the beams havinglongitudinal grooves 17 in their opposite sides to receive the inwardly projecting lower flange of metal slides 18 and 19 ,supporting'the longitu- .are spaced apart so as to not interfere with the;

closing of the top with the leaf housed. A pair of 'metal table slides are associated with each longitudinal beam 15 and connected to theopposite table top sections 20, said slides as-usual having rack bars 23in mesh with a pinion;24 in:-

" a recess at the center of the beam whereby manipulation of either top section will move both in unison, and as We employ leaf lifting and sup porting devices at opposite-sides of the center of the table to balance the leaf inits operations and'actuated by one of theslides' of each pair a description of one set of said devices will apply to'the 'other,.like reference numerals being used In carrying out our invention with respect to that metal fixture which is adapted to lift the leaf from housed position to a plane with the horizontally movable top sections 20 for extensionof'the table by closing said top sections against the leaf we employ a plate 25 attached to the under side of the leaf 21 by an angle flange 26 with the depending portion 27 at one end thereof provided with an inclined inner edge 28 turned oif at its lower end to form a seat 29 with an adjoining abutment 30, while the other end of said plate presents a depending portion 31 offset in front of the depending portion 2'? (see Fig.

4) and turned inwardly at its lower end to provide a support or foot piece 32. This plate is located at the outer side of the metal slide 18 so as to cooperate with a pin or roller 33 projecting laterally from said slide, and it will be noted by reference to Fig. 5 of the drawings that when the leaf is in its lowermost position or housed below the longitudinally movable table top sections the pin or roller is beyond one side of the fixture on a horizontal plane with the upper end of the inclined edge 28 whereby when the} top sections are moved outwardly carrying; the slide 13 the pin or roller 33 will engage said inclined edge and riding thereon as the top sections are further extended will lift the leaf 21- into raised position or coplanar with said top sections (see Fig. 2) at which time the pin or roller is moved along the seat 29 to strike the abutment 30 so as 7 to 'move the leaf slightly to the right for the operation of the device hereinafterdescribed which tions against the leaf returns-the latter to its original position to disengage the leaf supporting means and the rolleris thenpositioned under the foot piece 32 of the plate (see Fig. 7) for temporarily supporting the leaf. I i

The two-part metal fixture providing the means for retaining the leaf in raised position after it is elevated by the other fixture in the manner hereinbefore described comprises two plates 34 and 35, the plate 34 being attached'to adjoining beam from which it extends laterally and is provided with a vertical portion 3'7 adjoining the companion plate, and each plateis provided with'a bayonet slot in which slides a headed pin riveted to and extending from the other plate; that is to say, the portion of plate 34 projecting beyond the crosspiece 36 is provided at its upper end with a vertical slot 38 offset at its T lower end, as at 39, through which the headed pin 40 at the upper end of plate 35 extends, while the lower end of the vertical portion 37 of the plate 35 is provided with a similar slot 41 engage by pin 42 projecting from plate 34 and having an offset 43 at its upper end extending in the opposite direction from the offset 39 of the slot in plate 34. It will be apparent by reference to Fig; 6, where the leaf is shown supported in raised position, that the pins 40 and 42 travel in'opposite directions along the vertical portions of 'the bayonet slots as said leaf is lifted by the pin 33 engaging the inclined edge 28 of plate 25,

and when the pin shifts the leaf to the right by contact with the abutment 30 it causes said pins 40, 42, to enter the offset portions of the bayonet slots and seating therein will retain the'leaf in elevated position while the slidable sections 20,

modification of the two-part fixture for support-' ing the leaf in elevated position, in this instance plate 44 being attached directly to the under side of the table at the longitudinal center thereof and like plate 34 has a bayonet slot 49 engaged by headed pin 48 extending from the companion .plate 45, the latter being similar to plate 35 of the preferred construction hereinbefore described and likewise has a bayonet slot 47 engaged by headed pin 46 of plate 44. The plate 45 of this modified form of fixture for temporarily retaining the leaf in elevated position is also attached to the adjoining beam 15 of the supporting frame of the table, and it will be obvious that the operation is the same as that explained; that is to say, the shifting of the leaf by the raising and lowering device moves the plate 44 carried by said leaf causing the pins to enter the offset portions of the bayonet slots and support the leaf, and the closing of the top sections on the leaf returns the latter to its original position with the pins 46, 48 on a line with the vertical portions of the bayonet slots so that in the operation of contracting the table the leaf will drop downwhen the roller 33 clears the foot piece 32 and engages the inclined edge 28 of the fixture 25 to ride down said edge on further extension of the top sections of the table.

The metal fixtures for raising and lowering the leaf which may be housed below the inner ends of the horizontally slidable top sections, and for retaining said leafin elevated position coplanar with said slidable top sections for closing the latter thereagainst in extending the surface area of the top, provide an arrangement that will effect the operations of extending and contracting the table in a regular and positive manner requiring only that the slidable top section at either side of the table be manipulated,

for in extending the table the outward movement of the top sections and slides carried thereby causes the rollers on one of each pair of slides to engage the inclined slots of the'pair of fixtures attached to the table-leaf and raise the latter as well as shift it for the operation of the pair of fixtures for holding the leaf raised so as to be received between the slidable top sections at the center of the table, and in the operation of housing the leaf the slidable top sections are moved for a short distance outward so that the rollers on the slides will e'ngage the inclined edges of the raising and lowering fixtures up which they travel as the leaf is lowered on the slides and moved beyond the last mentioned fixtures as the top sections are brought together. In other words, as will be obvious by reference to Figs-2, 5 and 7 illustrating the operation of the raising and lowering devices invthe different positions of the vertically movable leaf from housed position below the inner ends of the horizontally movable top sections (Fig; 5) to its elevated position between said top sections (Fig. 7) the movement of slide 18 and pin or roller 33 fixed near the inner end thereof to the right on opening the table by separating the top sections 20 will cause said pin or roller to first engage the upper end of the inclined edge 23 of fixture 25 and as the slide is pulled further to the right the pin or roller will ride on said inclined edge forcing the fixture with the leaf to which it is attached upwardly between the spaced apart top sections on a plane therewith 'at which time the roller is in the re-- cess forming the seat 29 and pressing against the abutment 30 will shift the leaf to the right (as in full lines Fig. 6) for the operation of the means by which the leaf is retained in elevated position in the manner hereinbefore described for the closingof the top sections against the same, as shown in Fig. 7, shifting the leaf back to the center of the table with the roller 33 positioned under the foot piece 32 of the offset depending portion 31 of the fixture 25 to maintain the leaf raised for the initial operation of contracting the table, it being noted that in opening the table the roller passes above the foot piece 32 projecting, inwardly from the lower end of the depending portion 31.

The particular construction of the metal fixtures for accomplishing the automatic operation of raising the leaf to be received between the top sections and for returning the same to housed position resting on the slides and cooperating longitudinal beams of the supporting frame provide an arrangement which is especially adapted for supporting frames usable in connection with pedestal tables, though not limited in this particular, and in both instanceswith respect to the raising and lowering device and the device for retaining the leaf temporarily in raised position-the elements of said devices cooperate to effect the working thereof in a positive and reliable manner thus assuring a smooth operation and eliminating the liability of the parts getting out of order.

We claim:-- v 1. An extension table comprising a frame supporting-top sections having slides for horizontal movement of said top sections on the frame, and a leaf housed below the inner ends of the top sections and adapted to be raised and lowered with respect to the same, a metal fixture for raising and lowering the leaf comprising a plate with depending portions one of which is provided with an inclined inner edge and the other having a laterally projecting lower end, and a member on one of the slides supporting a table top section engaging said inclined edge and movable above and below said laterallyprojecting lower end of the fixture. v

2. An extension table comprising a frame supporting top sections having slides for horizontal movement of said top sections on the frame, and a leaf housed below the inner ends of the top sections and adapted to be raised and lowered with respect to the same, a metal fixture for raising and lowering the leaf comprising a plate with depending portions one of which is provided with an inclined inner edge offset at its lower end to form a seat and the other depending portion having a laterally projecting end; together with a member on one of the slides supporting a table top section engaging said inclined edge and movable above and below said laterally projecting lower end of the fixture.

3. An extension table comprising a frame supporting top sections having slides for horizontal movement of said top' sections on the frame,

and a leaf housed below the inner ends of the leaf comprising a plate with depending portions one of which is provided with an inclined inner edge offset at its lower end to form a seat and. an abutment adjoining said seat for shifting the fixture and leaf carrying the same, and the other depending portion having a laterally projecting end; together with a member on one of the slides supporting a table top section engaging said inclined edge and movable above and below said laterally projecting lower end of the fixture, and means responsive to the shifting of the leaf for temporarily supporting the same.

4. An extension table comprising a frame supporting top sections having slides for horizontal 3 movement of saidtop sections on the frame, and a leaf housed below the inner ends of the top sections and adapted to be raised and lowered with respect to the same, a metal fixture for raising and lowering the leaf comprising a plate with depending portions one of which is provided with an inclined inner edge offset at its lower end to form a seat and the other depending portion having a laterally projecting end; said fixture cooperating with a member on one of the slides supporting a table top section; together with a metal fixture for supporting the leaf comprising plates having bayonet slots extending in opposite directions, and a pin extending from each plate through the bayonet slots of the companion plate. 7

5. A metal fixture for extension tables for raising and lowering the vertically movable leaf comprising a plate with depending portions one of which is provided with an inclined inner edge offset at its lower end to form a seat and the other depending portion having a laterally projecting end.

6. A metal fixture for extension tables for raising and lowering the vertically movable leaf comprising a plate with depending portions one of which is provided with an inclined inner edge offset at its lower end to form a seat and an abutment adjoining said seat, and the other depending portion having a laterally projecting a lower end.

'7. A metal fixture for suporting the leaf of an extension table in elevated position comprising plates having bayonet slots extending in opposite directions, and a pin extending from each plate through the bayonet slot of the companion plate.

8. A metal fixture for supporting the leaf of an extension table in elevated position comprising plates having bayonet slots extending in opposite directions, pins extending from each plate through the bayonet slot of the companion plate, and means for attaching the plates.

9. A metal fixture for supporting the leaf of an extension table in elevated position comprising plates having bayonet slots extending in opposite directions, and headed pins extending from each plate through the bayonet slot of the companion plate.

10. A metal fixture for supporting the an extension table comprising a .plate having a bayonet slot in the body portion thereof and a pin projecting from the body of the plate, and a companion plate having a bayonet slot extending in the opposite direction from the bayonet slot in the other plate,'and a projecting pin on each leaf of plate engaging the bayonet slot in the companion plate.

11. A metal fixture for supporting the leaf of an extension table comprising a plate having bayonet slot in the body portion of said com- WENDELIN P. SENG. GEORGE F. HASSEL. 

